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Quantification of run order effect on chromatography: mass spectrometry profiling data
Umeå universitet, Teknisk-naturvetenskapliga fakulteten, Kemiska institutionen.
Umeå universitet, Medicinska fakulteten, Institutionen för folkhälsa och klinisk medicin, Reumatologi.
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2018 (Engelska)Ingår i: Journal of Chromatography A, ISSN 0021-9673, E-ISSN 1873-3778, Vol. 1568, s. 229-234Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Chromatographic systems coupled with mass spectrometry detection are widely used in biological studies investigating how levels of biomolecules respond to different internal and external stimuli. Such changes are normally expected to be of low magnitude and therefore all experimental factors that can influence the analysis need to be understood and minimized. Run order effect is commonly observed and constitutes a major challenge in chromatography-mass spectrometry based profiling studies that needs to be addressed before the biological evaluation of measured data is made. So far there is no established consensus, metric or method that quickly estimates the size of this effect. In this paper we demonstrate how orthogonal projections to latent structures (OPLS®) can be used for objective quantification of the run order effect in profiling studies. The quantification metric is expressed as the amount of variation in the experimental data that is correlated to the run order. One of the primary advantages with this approach is that it provides a fast way of quantifying run-order effect for all detected features, not only internal standards. Results obtained from quantification of run order effect as provided by the OPLS can be used in the evaluation of data normalization, support the optimization of analytical protocols and identification of compounds highly influenced by instrumental drift. The application of OPLS for quantification of run order is demonstrated on experimental data from plasma profiling performed on three analytical platforms: GCMS metabolomics, LCMS metabolomics and LCMS lipidomics.

Ort, förlag, år, upplaga, sidor
2018. Vol. 1568, s. 229-234
Nyckelord [en]
Run order effect quantification, Mass spectrometry profiling, OPLS, Instrumental drift
Nationell ämneskategori
Reumatologi och inflammation
Identifikatorer
URN: urn:nbn:se:umu:diva-150428DOI: 10.1016/j.chroma.2018.07.019ISI: 000443669600025Scopus ID: 2-s2.0-85049727571OAI: oai:DiVA.org:umu-150428DiVA, id: diva2:1237195
Tillgänglig från: 2018-08-07 Skapad: 2018-08-07 Senast uppdaterad: 2019-05-29Bibliografiskt granskad

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Surowiec, IzabellaRantapää-Dahlqvist, SolbrittBergström, SvenNormark, JohanTrygg, Johan

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Surowiec, IzabellaRantapää-Dahlqvist, SolbrittBergström, SvenNormark, JohanTrygg, Johan
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Kemiska institutionenReumatologiInstitutionen för molekylärbiologi (Medicinska fakulteten)Institutionen för klinisk mikrobiologi
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Journal of Chromatography A
Reumatologi och inflammation

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